Geochemical characterization and renal cell toxicity of water-soluble extracts from U.S. Gulf Coast lignite

An assortment of organic material can leach from lignite (low-rank coal) in water, and the water-soluble fraction from lignite has been associated with adverse health effects in areas of the Balkans. Recent efforts have been made to evaluate this hypothesis in other areas where lignite is in contact...

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Veröffentlicht in:Environmental geochemistry and health 2019-04, Vol.41 (2), p.1037-1053
Hauptverfasser: Ojeda, A. S., Ford, S. D., Gallucci, R. M., Ihnat, M. A., Philp, R. P.
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container_title Environmental geochemistry and health
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creator Ojeda, A. S.
Ford, S. D.
Gallucci, R. M.
Ihnat, M. A.
Philp, R. P.
description An assortment of organic material can leach from lignite (low-rank coal) in water, and the water-soluble fraction from lignite has been associated with adverse health effects in areas of the Balkans. Recent efforts have been made to evaluate this hypothesis in other areas where lignite is in contact with groundwater like in the U.S. Gulf Coast region. In this study, five Gulf Coast lignite samples were extracted with water, and the water-soluble portion of the coal was then characterized by total organic carbon, UV–Vis spectroscopy, and gas chromatography/mass spectrometry. Additionally, human kidney cells (HK-2) were exposed to water-soluble extracts of Gulf Coast lignite to assess toxicity. Cell viability was measured, and a dose–response curve was used to generate IC 50 values that ranged from 490 to 3000 ppm. The most toxic extract (Dolet Hills) was from Louisiana where lignite-derived organic material has been previously linked to high incidence of renal pelvic cancer. Concentrations of nephrotoxic metals (As, Cd, Co, Cu, Hg, Pb, V, Zn) were screened and were below those considered toxic to renal cells. We conclude that leachates from lignite do indeed have toxic affects on cultured human renal cells. Although the IC 50 values are higher than the concentration of organic matter in the local groundwater, typically
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source MEDLINE; Springer Nature - Complete Springer Journals
subjects Analytical methods
Aquifers
Cadmium
Cancer
Carbon - analysis
Cell Line
Cells
Coal
Coal - analysis
Coal - toxicity
Contamination
Copper
Earth and Environmental Science
Environment
Environmental Chemistry
Environmental Health
Gas chromatography
Gas Chromatography-Mass Spectrometry
Gas flow
Geochemistry
Groundwater
Health risks
Humans
Hypotheses
Kidney - cytology
Kidney - drug effects
Kidney diseases
Kidneys
Leachates
Lead
Lignite
Mass spectrometry
Mass spectroscopy
Mercury
Mercury (metal)
Mercury - analysis
Mercury - toxicity
Metal concentrations
Metals
Metals - analysis
Metals - toxicity
Morphology
Organic carbon
Organic matter
Original Paper
Phenols
Public Health
Renal cell carcinoma
Soil Science & Conservation
Spectrophotometry, Ultraviolet
Sulfur
Terrestrial Pollution
Total organic carbon
Toxicity
Toxicity Tests - methods
Ultraviolet radiation
United States
Water - chemistry
Water pollution
Zinc
title Geochemical characterization and renal cell toxicity of water-soluble extracts from U.S. Gulf Coast lignite
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